Suppression of ballistic helical transport by isotropic dynamical magnetic impurities

  title={Suppression of ballistic helical transport by isotropic dynamical magnetic impurities},
  author={Oleg M. Yevtushenko and Vladimir I. Yudson},
  journal={Physical Review B},
Dynamical magnetic impurities (MI) are considered as a possible origin for suppression of the ballistic helical transport on edges of 2D topological insulators. The MIs provide a spin-flip backscattering of itinerant helical electrons. Such a backscattering reduces the ballistic conductance if the exchange interaction between the MI and the electrons is anisotropic and the Kondo screening is unimportant. It is well-known that the isotropic MIs do not suppress the helical transport in systems… 

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